Adjustable vehicle-seat.



No. 874,723. 7 PATENTED DEC. 24, 1907.

A. U. ANDERSON.

ADJUSTABLE VEHICLE SEAT.

APPLIGATION FILED MAY 23, 1907.

I 4 SHEETS-SEEET 1.

v Vfldd- No. 824,723. I A PATENTED DEC. 24, 1907.

0. ANDERSON. ADJUSTABLE VEHICLE SEAT.

APPLIGATICN FILED MAY 23,1907.

L SHEETS-SHEET 2.

a mw M ga/i/z wAww-awii PATENTED DEC. 24, 1907.

'A. G. ANDERSON. 'ADJUSTABLBV-BHIGLE SEAT.

APPLIOATION IILEDPMVAYIZS, 1907.

4 SHEEN-SHE 3.

No. 374,723. v PATENTED DEC. 24, 1907. A. 0. ANDERSON. ADJUSTABLE VEHICLE SEAT.

APPLICATION FILED MAY 23,1907.

4 SHEETS-SHEET 4.

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ADJUSTLE VEHICLE-SEAT.

' Specification of Letters Patent.

Patented Dec. 24., 1907.

' Application illed May 23.1907. Serial No. 375,215.

To all 'whom it may concern:

Beit known that I, AL REDO ANDERSON,-

a citizen of the United States, residing at Atwater, in the county ofKandiyohi and State of Minnesota, have invented certain new and useful lmprovementsin Adjustable Vehicle Seats; andflv do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art towhich itappertains to" an improvement on the device set forth and broadly claimed in my pending application panying drawings, wherein like characters.

S. N. 330,177, filed August 11, 1906, and entitled Vehicle seats plic'ation, as well as in my prior application, the so-called seat bottom or seat proper is supported by a pair of crank rods capable of parallel swinging movements or adjustments tosupport the seatin extreme upper and lower positions, and the said cranks are capable of independent or differential pivotal movements for cooperation with crank engaging lock devices, to support the seat in an intermediate position. 1

Thepresent invention is directed chiefly to improved'lock mechanism or means for securing the crank rods in their different ad.- justments, and consequently the seat, at different elevations. The invention is illustrated in'the accomindicate like parts throughout the several views. i

Referring to the drawings, Figure 1 is a view in side elevation, showing the improved seat support and seat, with the seat adjusted to its highest position. Fig. 2 is a front elevation. of the said seat and support, adjusted 'as shown in Fig. 1-.-- Fig.3. is a view in side elevation, showing the seat supportand seat, with the seat, in its lowest position.. Fig. 4 is a front elevation of the parts adjusted as Fig. 5 is a view in side elevation, showing the seat support and seat, with the said. seat set in its intermediate po sition. Fig.6. is afront elevation of the parts larger scale than'in Figs. 5 and 6. "bottom plan view, with parts broken away, showing the seat and adjustable support therefor; and Fig. 9 is a detail view in front- .In the present ap adjusted as shown in Fig.- 5. Fig. 7 is a .view partly in side elevation, but with some parts sectioned approximately on the line cal- 01: of Fig. 6, but with the parts shown on a Fig. 8 is 'a elevation, showing a portion of the seat and seat supporting connections, some parts be ing broken away and some parts being removed.

The seat proper, which may be of any suitable form, is indicated as an entirety by the numeral 1, and the sides of the carriage or vehicle body from which the seat is supported are indicated by the numeral 2. shown, the base members of the seat support are made up each of two leaf springs 3 and 4, the intermediate portions which are connected by a spacing block but it will be understood that so far as this invention is concerned, these base supports may take various forms and may be either resilient or rigid. In the arrangement illustrated, how ever, the lower springs 3 are provided with inwardly projecting rest hooks 6 that are adapted to engage with the upper edges of the-sides 2 of the vehicle body.

The two crank rods Tare provided at the ends of their arms'withtrunnions 7 that are journaled in sleeves formed at the ends of the upper springs 4. The end portions of the transverse body of the rear crank rod 7 are connected to the trunnions '7 of the front crank rod 7 byrneans of toggle links 8, which links are arranged to work close to the ends of the seat 1 and inward of the corresponding up er springs 4.

ecured to the ends and depending from the bottom of the seat 1 are front, rear and intermediate coupling brackets 9, 10, and 11, respectively, which as shown are formed integral with a tie strap l2. The front coupling braokets 9- are rovided with seats 9 that open downwar' y and rearwardly, the

rear coupling brackets 10 are pro'videdwith seats lO 'that open downwardly and forwardly, and the intermediatecoupling brackets 11; are provided withseats 11? that open toward the rear of the seat. The said seats 9 10 and 11 are adapted to receive the transverse body ortions of the crank rods 7 in a manner w 'ch will presently be described.

'The toggle links 8, it will be noted, -are provided with cooperating sto shouldersfl at their intermediate joints w iich limit the downward movements of the toggles and serve to hold the same straight or approximately strai ht, as shown in Figs. 1, 3, 5 and 7. Onthe back of the seat, near the ends thereof, are coupling hooks 13 that are adapted to engage the transverse body portion of one of the crank rods 7 in a manner which will also presently appear.. Secured to the bottom of the seat, at the ends and near the front thereof, are rest lugs or pro' into engagement with the respective crank rods when the said bar is oscillated in the direction of the arrow marked on Fig. 8.

The manner of manipulation of the seat support to support the seat at 'diflerent heights is substantially as follows: In Figs. 1 an 2, the seat is adjusted into its highest position, and at this time the two cranks 7 are moved upward into vertical positions and-the bodyortion of the rear crank rod 7 is located wit in the seats 10 of the coup ling brackets 10, while the bodyportion of the front crank rod 7 is located within the seats 9 of the coupling brackets 9 and the two toggle links 8 which. then pccupy obli ue ositions as best shown in Fi 1 are v c I pressed downward and straighten'out so that they form a stiff brace that extend from the l'ront lower corners to the upper rear corners of the approximately rectangular parallelograms formed by the ends of the seat, the

- upper springs 4 and depending arms of the crankrod 7 and thus rigidly hold the crank rods, and hence" the seat, in elevated positions.

.When the seat is adjusted to its lowest position shown in Figs. 3. and 4, the body portions of the crank rods 7 are turned downward and the arms thereof extend vertlcally upward to the ends of the springs 4; and in this adjustment the togglelinks 8 form rigid braces between the upper forward corners and the rear lower corners of the approximate right angle parallelograms formed by the ends of the seat, the upper springs 4 and the connected arms of the said crank rods.

It will, of course, be understood that the toggle links 8 must be buckled or folded up in order to adjust the crank rods from the positions shown in Figs. 1 and 2 into the position shown in F 3 and 4, or vice. versa, and this,

"of the seat.

of course, may beeasily done by pressing the intermediate portions of the said'toggles upward. The said adjustments of the seat support and seat may, therefore, be very easily accomplished, and when the seat is moved into one or the other of its adjustments it will be very firmly held by the said toggle links or folding braces.

To adjust the seat'to its intermediate position shown in'Figs. 5 to 9 inclusive, the ody ortions of the crank rod 7 must be detached om the coupling brackets 9 and 10 (which, of course, requires a pivotal movement of the latch bar 15), the seat must bedroplped down so that its rest hooks 13 engage the ody portion of the up-turned rear crank rod 7, while the front crank rod is turned downward and rearward and engaged'in the seats 11 of the intermediate coupling brackets 11, as best shown in Fig; 7. hen this is done, the rest lugs or projections 14 on the forward end portions of the seat bear upon the front end portions of the arins of the said forward crank rods 7 and'thereby support the front portion In this adjustment, the toggle links 8 hold the upper transverse portion of the rear crank rods 7 against oscillatory movementsn-nd thus the seat is securely held in its intermediate adjustment.

What I claim is:

1. The combination with a seat, of means for adjustably supporting the same, comprising a base support, apair of crank-rods, the bodies of which are connected to said seat with their arms arranged to clear the ends thereof, and with said arms connected to said base support by bearings located outside of said arms, and oblique links or bracesconnecting diagonally opposite portions of said crank rods and holding said crank rods in their set adjustments, substantially as described.

2. The combination with a seat, of means for adjustahly supporting the same, comprising a base support, .a pair of crank rods, the bodies of which are connected to said seat, with their arms arranged to clear the ends thereof, and with said arms connected to said base support by bearings located outside of said arms, and a pair of toggleaeting obliquely extended links connecting the end portions of said crank rods, substantially as described.

3. Thecombin-ation with a seat, of means for adjustablysupporting the same, comprising a base support, a pair of crank rods, the bodies of which are connected to said seat, with their arms arranged to clear the ends thereof, and with said arms connected to said base support by bearing located outside of said arms, and a pair of toggle links connecting the body portion of the rear crank rods to the lower end of the front crank rod, and adapted when straightened out to lock said crank ro ds against pivotal to said base support, an

movements, in respect to each stantially as described.

4.. The combination with a seat, of means for adjustably supporting the same, comprising a base support, a pair of crank rods,

other, subthe body portions of which aredetac'hablypivoted to said seat, and the arms of which are rovided with trunnions pivotally mounted in said base support, toggle linksconnecting the body portion of the rear crank rod to the trunnions of said front crank rod,

and rest lugs on the forward end portions of the seat engageable with the arms of said front crank rod when the seat is adjusted into an intermediate stantially as described.

v5. Thecombination with a seat, of means for adjustably supporting the same, composition, subprising a basesupport, a pair of crank rods,

the arms. of which are pivotally connected the body portions of which are detachably pivoted to said seat, of an oblique brace connecting. the

body portion of the rear crank rod tothe arms'of the front crank rod, and hooks or open brackets'on the back and bottom of said seat engageable, respectively, with the body portions of the rear and front crank rods, substantially as described;

,6 The combination with a seat, of means for 'adjustably supporting the same, comprising a'base support, a pair of crank rods,

the arms of which are pivotally connected to said base support,- andthe body portions of which are detachably pivoted to said seat, toggle links connecting the body portionof the rear crank rod to the arms of the front crank rod, rest hooks or openbrackets on the back of said seat engageable with the body portion of said rear crank rod, and

means whereby the front portion of the seat be, supported from said base support risin a base su ort a airof crank rods P a 1 r the arms of which are pivotally connected to said base support, and the body portions of which are detachably pivoted to saidse at, rest hooks or open brackets on the back and. bottom of said seatxengageable, respectively,

with the bodyportions of said rear and front crank rods when the seat is adjusted into its ing the body portion of the rear crank rod to the arms of said front crank rod, and rest lugs or fprojections engageable with thearmsont crank rod when saidseat 1s ad-v justed into an intermediate position, substanof the tially as described.

8. The combination with' a seat havi g .55 intermediate position, toggle links connectopen fi'ont and rear coupling brackets at its ends, of means for adjustably supporting said seat, comprising a base support, a pair of crank rods, the arms of which are pivotally connected to said base sup ort, and the body portions of which are 'etachably 'en-' gageable with the open coupling brackets of saidseat, a latch bar pivoted to the bottom of said seat and engageable with the body portions of said crank rods to hold the same in engagement with said coupling brackets,

and toggle links connecting the body portion of said rear crank rod to the arms of said front crank rod, substantially as described.

.In testimony whereof I, aflix my signature in presence of two witnesses.

ALFRED o. ANDERSON.

.l/Vitncssesz: Y

CARL M. SKAAR, G. F. Frscrrnn. 

